The project titled Song of Celebration has been commissioned by Ballarat's Baha'i community to mark 100 years of the faith in Australia.

Mr and Mrs Williams wrote the song of generosity, gratitude, strength and love for the Baha'i community in 2017 to be performed with a 30-voice choir.

The choral piece is taken from the writings of the Baha'i faith and aims to conjure feelings of positivity, connection, hope and joy.

The couple released a recording of the song and tutorial videos on five different vocal parts on their website on Saturday.

Anyone can join the project by choosing their vocal part, rehearsing with the tutorial video and submitting a video or audio recording of themselves singing the part before September 9.

"People can sing the song in their vocal range and it will all turn out to be in harmony when we put it together in the magic of the studio," Mrs Williams said.

The second Virtual Soul Choir project comes after the success and popularity of their initial project that featured 150 people in the final performance video.

Watch the first Virtual Soul Choir performance video below.

"It brought so much joy to everyone who was taking part, other people who saw it and friends and families of participants," Mr Williams said.

Mrs Williams encouraged anyone interested to get involved and not to worry about making a mistake or worrying they won't sound good.

"Each person who gets added makes it sound better and it doesn't matter what their take was like," she said.

"It always sounds better with more people singing."

Watch George and Geoffrey Williams explain the Virtual Soul Choir project.

Mr Williams said it made sense to keep doing what he loved to do, despite the restrictions on everyday life.

"As we can't get together in choirs anymore, my thinking is we need to do something," he said.

"This is what the technology allows us to do. It is fun and we can use skills we both have to do something that is enjoyable.

"Music is about love and having a great time. That is what we are trying to do."

Mrs Williams said the virtual choir brought a feeling of normality to life amid the ups and downs of the coronavirus pandemic.

"We are trying to cope and we are doing really well but it doesn't feel very good sometimes and singing really helps," she said.

People who participate in the project are welcome to make a voluntary donation to Virtual Soul Choir through the website, virtualsoulchoir.com/.

Mr and Mrs Williams said participants should look out for a special element in the final video that won't be revealed until it is launched.